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Thursday, May 23, 2013

Funky Juniper URLs

If you've ever tested any clients that have Juniper VPNs you've probable seen the ol:

http://[target]/dana-na/auth/url_default/welcome.cgi
URL.

@infosecmafia and I mentioned in our DerbyCon talk on how you can sometimes find extra or test URLs that are also valid URLs for the Juniper VPN. The example we used was where the url_default required secret questions but url_8 or whatever did not because it was a test URL the admins had set up.

Soooooooo, its worth running a quick check if you come across one. I wrote a Metasploit auxiliary module to do this. Pretty simple, it just runs thru url_0 through url_100 and prints out the 200 replies. looks like so:

–[+]
192.168.1.1:443 Received a HTTP 200 with
bytes for /dana-na/auth/url_0/welcome.cgi

–[+]
192.168.1.1:443 Received a HTTP 200 with
bytes for /dana-na/auth/url_1/welcome.cgi

–[+]
192.168.1.1:443 Received a HTTP 200 with
bytes for /dana-na/auth/url_2/welcome.cgi

–[+]
192.168.1.1:443 Received a HTTP 200 with
bytes for /dana-na/auth/url_3/welcome.cgi

–[+]
192.168.1.1:443 Received a HTTP 200 with
bytes for /dana-na/auth/url_4/welcome.cgi

–[+]
192.168.1.1:443 Received a HTTP 200 with
bytes for /dana-na/auth/url_5/welcome.cgi

–[+]
192.168.1.1:443 Received a HTTP 200 with
bytes for /dana-na/auth/url_6/welcome.cgi

–[+]
192.168.1.1:443 Received a HTTP 200 with
bytes for /dana-na/auth/url_8/welcome.cgi

–[+]
192.168.1.1:443 Received a HTTP 200 with
bytes for /dana-na/auth/url_9/welcome.cgi

–[+]
192.168.1.1:443 Received a HTTP 200 with
bytes for /dana-na/auth/url_12/welcome.cgi

Seeing these doesn't ALWAYS mean you have a multi-factor bypass but its worth checking out if the main site is multi-factor.

Random example:

url_default

url_3

url_8

url_10

Available on my github repo until I get around to doing a pull request.